GOSAT_FTS_L1b_band4
Variables
The table below lists the variables that are present in the HARP product that results from an ingestion of GOSAT_FTS_L1b_band4 data.
| field name | type | dimensions | unit | description |
|---|---|---|---|---|
| datetime | double | {time} | [seconds since 2000-01-01] | start time of the measurement |
| longitude | double | {time} | [degree_east] | longitude of the measurement |
| latitude | double | {time} | [degree_north] | latitude of the measurement |
| radiance | double | {time, spectral} | [W/(cm^2.sr.cm^-1)] | radiances derived by taking the norm of the fourier transform of measured wavelengths |
| wavenumber | double | {time, spectral} | [cm^-1] | wavenumber for each point in the spectrum |
| index | int32 | {time} | zero-based index of the sample within the source product |
Ingestion options
The table below lists the available ingestion options for GOSAT_FTS_L1b products.
| option name | legal values | description |
|---|---|---|
| band | 1p, 1s, 2p, 2s, 3p, 3s, 4 | spectral band to ingest (default is 1p) |
This definition is only applicable when: band=4
Mapping description
The table below details where and how each variable was retrieved from the input product.
| field name | mapping description | |
|---|---|---|
| datetime | path | /exposureAttribute/pointAttribute/Time[] |
| description | the record with year/month/day/hour/min/sec values is converted to a double precision floating point value that represents the amount of seconds since 2000-01-01 00:00:00 | |
| longitude | path | /exposureAttribute/pointAttribute/geometricInfo/centerLon[] |
| latitude | path | /exposureAttribute/pointAttribute/geometricInfo/centerLat[] |
| radiance | path | /Spectrum/TIR/band4/obsWavelength[] |
| description | the radiance returned is the complex norm of the complex value that is stored in the product; in other words, what is returned is sqrt(real * real + imag * imag) | |
| wavenumber | path | /exposureAttribute/pointAttribute/RadiometricCorrectionInfo/spectrumObsWavelengthRange_TIR |
| description | the wavenumbers are calculated by evaluating the function a.x + b for x = 0 .. N-1 with a,b the wavelength range parameters in the product | |